CAUSES OF DEACTIVATION AND REGENERATION OF AN INDUSTRIAL PT-NIO/AL2O3 NITROGEN-OXIDES REDUCTION CATALYST

被引：6

作者：

ANGELIDIS, TN

PAPADAKIS, VG

PAVLIDOU, E

机构：

[1] INST CHEM ENGN & HIGH TEMP CHEM PROC,GR-26500 PATRAI,GREECE

[2] ARISTOTELIAN UNIV THESSALONIKI,SEM UNIT,GR-54006 THESSALONIKI,GREECE

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 1994年 / 4卷 / 04期

关键词：

CATALYST DEACTIVATION; FOULING; LEACHING; NOX REDUCTION; PT-NIO/AL2O3; REGENERATION; REJUVENATION;

D O I：

10.1016/0926-3373(94)00024-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The deactivation mechanism and regeneration of spent industrial Pt-NiO/Al2O3 catalysts used for NO(x) reduction was studied by means of SEM-EDS, chemical analysis and kinetic measurements. It was found that the main cause of deactivation under industrial operating conditions is fouling due to carbonaceous and ZnO deposits. Various contaminant removal procedures (calcination, wet screening and acetic acid leaching) were tested and the influence of these procedures on contaminant removal and the catalyst activity were investigated. Regeneration of the spent industrial catalyst using inexpensive processes was shown to be feasible.

引用

页码：301 / 313

页数：13

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